1220575316 has 72 divisors (see below), whose sum is σ = 2450891520. Its totient is φ = 530134528.

The previous prime is 1220575313. The next prime is 1220575327. The reversal of 1220575316 is 6135750221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220575313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 770261 + ... + 771843.

It is an arithmetic number, because the mean of its divisors is an integer number (34040160).

Almost surely, 2^1220575316 is an apocalyptic number.

It is an amenable number.

1220575316 is an abundant number, since it is smaller than the sum of its proper divisors (1230316204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220575316 is a wasteful number, since it uses less digits than its factorization.

1220575316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673 (or 1654 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 1220575316 is about 34936.7330470380. The cubic root of 1220575316 is about 1068.6976661172.

The spelling of 1220575316 in words is "one billion, two hundred twenty million, five hundred seventy-five thousand, three hundred sixteen".